Coffee maker



FIG. 1 is a front elevational view of the coffee maker, showing my design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The indicia shown forms no part of the invention and is hereby disclaimed. 

The ornamental design for a coffee maker, as shown and described. 